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Finding the Fourth Proportional to 290,430.25, 435,476.23 and 112,729.66

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Solution

The fourth proportional to 290,430.25, 435,476.23 and 112,729.66 is: 169,028.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,430.25 : 435,476.23 = 112,729.66 : x
  2. Step 2: Convert to fraction form
    290,430.25/435,476.23 = 112,729.66/x
  3. Step 3: Cross multiply
    290,430.25x = 435,476.23 × 112,729.66
  4. Step 4: Simplify right side
    290,430.25x = 49,091,087,345.98
  5. Step 5: Solve for x
    x = 49,091,087,345.98/290,430.25
  6. Step 6: Final answer
    x = 169,028.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.